Agitator



Dec. 9, 1930. H. F. w. BROCKMANN 1,784,416

AGITATOR Filed Nov. 15, l 1926 INVENTOR ATTORNEYS Patented Dec. 9, 1930UNITED STATES PATENT OFFICE? A HENRY F. W. BROCKMANN, OF SAN FRANCISCO,CALIFORNIA, ASSIGNOR OF ONE-HALF i TO HARRY C. SCOTT, OF SAN FRANCISCO,CALIFORNIA 1 AGITATOR Application led November 15, 1926. Serial No.148,485.

This invention relates to agitators for use in connection with thespraying of paints, bronzes, etc.

An object of my invention is the provision of an agitator operated byair pressure.

Vith the foregoing object in view, together with such other objects andadvantages as may subsequently appear, this invention resides in theconstruction and arrangement of parts hereinafter described and claimed,and illustrated in the accompanying drawings, in which Figure 1 is aperspective view of a paint spraying apparatus'with which is combinedthe device of my invention;

Figure 2 is a view, partly in section and partly in elevation, of thedevice of my invention;

Figure 3 is a bottom plan view of Figure 2;

Figure 4 is a plan view of a vaned-Wheel employed in my device asillustrated, and

Figure 5 isl an enlarged elevational View of a part of my inventionshown on smaller scale in Figure 1.

Referring to the drawings for a more detailed description thereof, thenumeral 7 indicates a spraying gun which however is no part of myinvention and since the type is well known, no detailed description isnec- 30 essary.

Briefly, however, compressed air enters the gun at Qandthe resultingeffect is to cause paint or other mixture to be drawn up thru the tube12 within the jar 13 and to be eX- 35 pelled from the nozzle 14; of thegun.

The paint or other mixtures placed within the j ar or receptacle 13settle quickly unless they are constantly stirred. An agitator musttherefore be provided to keep the mix- 40 ture homogeneous in order tosecure good results on a surface painted by means of the apparatusillustrated.

According to my invention, a pipe 15 is connected at 17 with the paintgun 7 so that 45 air Which'is employed to get the paint out of the jar13 may pass thru the pipe 15. The pipe 15 is connected with a cap orcover 18, so that air coming thru this pipe will enter the inside of thecap and turn a wheel 20 shown in Figure 4 as having vanes 22. The wheel20 rides on ball bearings 25 shown in Figure 2 and is secured by meansof a nut 27, also shown in Figure 2, to the stem 28 of an agitator 29.The ball-bearings 25 are set in the bottom 30 of a member 31, whichforms with the cap 18 a casing for the vaned wheel 20.

The member 30 is supported by a cover 13a of the jar 13, as clearlyshown in Figure 2, while the cap 18, shown in Figure 2, is held to itscooperating member 30 by means of the pin which fits into the bayonetslot 36 of the cap 18.

The agitator 29 comprises blades 38, 39 and which at their centerspractically touch the bottom of the receptacle 13 and these blades areformed at different angles whereby any matter tending to settle at thevbottom of the receptacle is successively lifted higher by eachsucceeding blade.

In the operation of the device, air is released thru the gun when thetrigger 7a is pulled, and thru the pipe 15 when a controlable valve 17ais open. The air which passes thru the pipe 15 hits the vanes 22 of thewheel 2O whereby the agitator is rotated and this air then passes to theatmosphere thru an aperture 30a formed in the bottom 30 of the member31.

While' I have described one embodiment of my invention, modificationsthereof may be readily devised without departing from the spirit of myinvention, and it is to be under stood that such modifications comewithin the scope of the appended claims.

I claim:

1. In a device of the type described, a propeller having a plurality ofblades, one of said blades being inclined at a slight degree, andeachsucceeding blade thereafter being inclined at a greater degree, wherebyeach blade of the propeller will move the fluid ay greater distance thanthe precedin blade when starting withY the blade havlng the y smallestangle.

2. An agitator comprising a rotatable shaft, an impeller mounted on saidshaft, means Lfor rotating said impeller, a propeller disposed at theother end of the shaft and having a plurality of blades, each blade beininclined at a different angle for graduleast-angle to they 'blade withthe greatest angle; HENRY W. BRooKMANN. Y

